Objective-C

1: retain returns a value of the ID type. In this way, you can execute a reservation call with parameters of other messages in nesting mode, increase the reserved counter value of the object, and require the object to perform some operation, for

By classification, you can add new methods to existing classes without the need for source code. This is a bit like the Extension Method in C. In this case, an example is provided to convert a string into a camper type and remove spaces.

  Change the company name in the source code comment: Run terminal. Enter the followingCodePress enter and restart xcode. Replace elf. sundae (AT) gmail.com (only one row)Defaults write com. Apple. xcode pbxcustomtemplatemedia definitions

Zhihu: I have nothing to do with reading obj-C books in the library over the past few days. After reading obj-C for two days, I feel that this is not an object-oriented C, and the class syntax is so weird. What is the essential difference between

Objective-C has a brain problem. Description: The asiformrequest class is a subclass of the asihttprequest class. In the function, retain is performed on the asiformrequest pointer returned in another place. Out of this function, the retain

After that, the hacker became familiar with the platform class library ghost and studied the frequently-used event processing metrics controls. Then he could develop the app. 1. # Import# Import # Import "successfully created successfully named"In

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Http://www.61ic.com/Mobile/iPhone/201108/36504.html -------------------------------------------------- Objective-C development-codeblocks instance operationsAuthor: blog ParkArticleSource: blog page views: 139 updated on: In objective-C

Objective-C code Learning Outline (1)  Http://www.1000phone.net/thread-7141-1-1.html Objective-C code Learning Outline (2)Http://www.1000phone.net/thread-7142-1-1.html Objective-C code Learning Outline

to be transferred from an Sina Blog, You can watch the qianfeng video to learn about" dog walking principles "first ". This article is well written. It turns around ...... When self .. is used is actually related to the access method of obj-

In short, you can understand @Selector() Is to take the class method number, his behavior can basically be equivalent to the function pointer in C language, but in C language, the function name can be directly assigned to a function pointer,

  From http://www.cnblogs.com/biosli/archive/2011/04/30/Mixing_ObjectiveC_and_Cplusplus_in_iPhone_Development.html Let's talk about the problem first,ArticleThe title is actually not good. In iOS development, the libraries created by Apple are

Summary: In objective-C, the method used to call a function is message transmission. The difference between this method and a common function call is that you can transmit any message to an object at any time, instead of declaring these methods

The following methods are available for comparison between dates: -(Bool) is1_todate :( nsdate *) otherdate; Yes is returned for comparison with otherdate.   -(Nsdate *) earlierdate :( nsdate *) anotherdate; Returns the date earlier than

// Main. M // helloworld // created by Jimmy. yang on 11-1-24. // copy 2011 _ mycompanyname __. all rights reserved. # import // define the ry type enumeration typedef Enum {kcircle, krectangle, koblatesshperoid} shapetype; // define the ry color

Mbprogresshud (Progress indicator Library) Address:Https://github.com/jdg/MBProgressHUD Apple applicationsProgramGenerally, an elegant and translucent progress display is used, but this API is not public. Therefore, if you use it, it is likely

Nonatomic: Non-atomic access, no lock when assigning values to attributes, multi-thread concurrent access will improve performance. If this attribute is not added, both access methods are atomic transaction access by default.(Atomic is a thread

7. comprehensive example: Searching for filesProgram function: Find a local file (.jpg) in the main directory and output the list of found files.Nsfilemanager provides operations on the file system, such as creating directories, deleting files,

  Chinese scanned version + English ebook + source code This resource is compressed by betterzip on a Mac, with three volumes uploaded to csdn.Use 7zip in Windows to decompress the package. Because the resources are too large (the Chinese version

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